The number of criminal activities has been rising each year. This issue is not peculiar to any state or country but, rather, has become a global challenge. The reason behind the spike includes many factors such as poverty, unemployment, illiteracy, etc., but the issues present in the existing police management system are also a dominant factor. With advancing technology and digital governance, the Electronic First Information Report (e-FIR) has been introduced in different parts of the world. e-FIR is stored in a centralised system which has various challenges and limitations such as data tampering, lack of accountability, corruption and unreported FIRs. This paper proposes a blockchain-based lightweight encrypted police management system. It covers all aspects of RDBMS right from complaint lodging, FIR registration, distributed database management system and above all a lightweight system. This allows immutable complaint filing by the citizens, which is stored in the blockchain, and can only be accessed by authorised personnel. A decentralised database, InterPlanetary File System (IPFS), is used to store FIR, evidence, chargesheet, etc. Also, to ensure transparency and data integrity of IPFS, logs of all transactions on IPFS are stored in the blockchain. The proposed work compares the time taken by different encryption algorithms to encrypt data and store it on IPFS. In addition, the time trends for various encryption algorithms as file sizes increase have also been examined and presented.